Re: William Acker Pittsford, Ontario Co NY 1790/91

I am looking for info on Peter Acker born 1836 in NY/PAmarried Lucinia Pixley born 1839 children Julia, William and Harriet .I believe they were born in Oil Creek Crawford Pa.Peter disappeared whenhe accidently killed his brother in a hunting accident.His wife later moved] to Mich and married Josiah Love Clark. I would love to find out what happened to Peter and info on his background.In an earlier census he was listed as a farmer.